var Cookie={
	getCookie:function(c_name){
		if (document.cookie.length>0){
			c_start=document.cookie.indexOf(c_name + "=")
			if (c_start!=-1){ 
				c_start=c_start +c_name.length+1 
				c_end=document.cookie.indexOf(";",c_start)
				if (c_end==-1) c_end=document.cookie.length
				return decodeURIComponent(document.cookie.substring(c_start,c_end))
			} 
		 }
		return "";
	},
	setCookie:function(c_name,value,expiredays){
		var exdate=new Date()
		exdate.setDate(exdate.getDate()+expiredays)
		document.cookie=c_name+ "=" +encodeURIComponent(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
	}
}